Sony XR-C5500T Service manual
XR-C5500T
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SERVICE MANUAL
SPECIFICATIONS
Cassette player section
Tape track 4-track 2-channel stereo
Wow and flutter 0.08 % (WRMS)
Frequency response 30 – 18,000 Hz
Signal-to-noise ratio 58 dB
Saudi Arabia Model
Model Name Using Similar Mechanism XR-C5604X
T ape Transport Mechanism Type MG-25F-136
Power amplifier section
Outputs Speaker outputs
Speaker impedance 4 – 8 ohms
Maximum power output 50 W × 4 (at 4 ohms)
(sure seal connectors)
Tuner section
FM
Tuning range 87.5 – 108.0 MHz
Aerial terminal External aerial connector
Intermediate frequency 10.7 MHz/450kHz
Usable sensitivity 8 dBf
Selectivity 75 dB at 400 kHz
Signal-to-noise ratio 66 dB (stereo),
Harmonic distortion at 1 kHz
Separation 35 dB at 1 kHz
Frequency response 30 – 15,000 Hz
MW
Tuning range 531 – 1,602 kHz
SW
Tuning range SW tuning interval:
Aerial terminal External aerial connector
Intermediate frequency 10.7 MHz/450 kHz
Sensitivit
72 dB (mono)
0.6 % (stereo),
0.3 % (mono)
SW1: 2,940 – 7,735 kHz
SW2: 9,500 – 18,135 kHz
(except for 10,140 – 11,575
kHz)
30 µV
General
Outputs Audio output
Tone controls Bass ±9 dB at 100 Hz
Power requirements 12 V DC car battery
Dimensions Approx. 178 × 50 × 183 mm
Mounting dimensions Approx. 182 × 53 × 162 mm
Mass Approx. 1.2 kg
Supplied accessories Front panel case (1)
Design and specifications are subject to change
without notice.
Power aerial relay control
lead
Power amplifier control
lead
Treble ±9 dB at 10 kHz
(negative earth)
(w/h/d)
(w/h/d)
FM/MW/SW CASSETTE CAR STEREO
TABLE OF CONTENTS
1. GENERAL
Location of Controls ....................................................... 3
Setting the Clock ............................................................. 3
2. DISASSEMBLY ......................................................... 4
3. ASSEMBLY OF MECHANISM DECK........... 6
4. MECHANICAL ADJUSTMENTS ....................... 9
5. ELECTRICAL ADJUSTMENTS
Tape Deck Section .......................................................... 9
Tuner Section .................................................................. 9
6. DIAGRAMS
6-1. Block Diagram – TUNER/TAPE/MAIN Section – ....... 11
6-2. Block Diagram – DISPLAY/KEY CONTROL/
BUS CONTROL/POWER SUPPLY Section – .............. 12
6-3. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 13
6-4. Schematic Diagram – MAIN Board (1/2) – ................... 14
6-5. Schematic Diagram – MAIN Board (2/2) – ................... 15
6-6. Printed Wiring Board – MAIN Board – ......................... 16
6-7. Printed Wiring Board – SUB Board – ........................... 17
6-8. Schematic Diagram – SUB Board – ............................... 17
6-9. Printed Wiring Board – KEY Board –........................... 18
6-10. Schematic Diagram – KEY Board – .............................. 19
6-11. IC Pin Function Description ........................................... 21
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be damaged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
7. EXPLODED VIEWS................................................ 24
8. ELECTRICAL PARTS LIST ............................... 27
2
SECTION 1
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GENERAL
This section is extracted from
instruction manual.
Location of controls
S
+
C
I
D
MENU
SOURCE
SOUND
P
R
S
T
—
D
I
S
OFF
Refer to the pages listed for details.
1 MENU button 8, 10, 11, 12, 13, 15
2 Volume control dial
3 SOURCE (TUNER/TAPE/CD/MD) button
7, 9, 11, 14
4 PRST/DISC +/– (cursor up/down) buttons
7, 8, 10, 11, 12, 13, 15
During radio reception:
Preset stations select 11
During CD/MD playback:
Disc change 15
5 DSPL (display mode change) button
10, 14, 15
6 MODE button 9, 10, 11, 14
During tape playback:
Playback direction change 9
During radio reception:
BAND select 11
During CD/MD playback:
CD/MD unit select 14
7 Display window
8 Z (eject) button (located on the front side
of the unit behind the front panel) 9
9 OPEN button 6, 9, 17
q; D-BASS button 14
qa SOUND button 13
qs OFF button* 6, 7, 9
DSPL
P
R
S
T
+
MODE
SEEK/AMS
ENTER
—
C
REP SHUF
1 2 3 4 56
OPEN
D-BASS
XR-C5500T
qd Reset button (located on the front side
of the unit behind the front panel) 6
qf SEEK/AMS –/+ (cursor left/right) buttons
7, 8, 9, 10, 11, 12, 13, 15
Seek 12
Automatic Music Sensor 9, 15
Manual search 12, 15
qg ENTER button 8, 10, 11, 12, 13, 15
qh
Receptor for the optional card remote
commander
qj Number buttons
During radio reception:
Preset number select 11
During tape playback:
(1) REP 10
During CD/MD playback:
(1) REP 16
(2) SHUF 16
* Warning when installing in a car
without ACC (accessory) position on
the ignition key switch
Be sure to press (OFF) on the unit for two
seconds to turn off the clock display after
turning off the engine.
When you press (OFF) only momentarily,
the clock display does not turn off and this
causes battery wear.
Setting the clock
The clock uses a 12-hour digital indication.
Example: To set the clock to 10:08
1
Press (MENU), then press either side of
(PRST/DISC) repeatedly until “CLOCK”
appears.
1 Press (ENTER).
The hour indication flashes.
2 Press either side of (PRST/DISC) to set
the hour.
3 Press (+) side of (SEEK/AMS).
The minute indication flashes.
4 Press either side of (PRST/DISC) to set
the minute.
2
Press (ENTER).
The clock starts.
After the clock setting is complete, the
display returns to normal playback mode.
Tip
When the D.INFO mode is set to ON, the time is
alwa
s displayed (page 13).
3
e
SECTION 2
DISASSEMBLY
Note: Follow the disassembly procedure in the numerical order given.
SUB PANEL, MECHANISM DECK (MG-25F-136)
0
mechanism deck
(MG-25F-136)
8
connector (CN351)
5
sub panel assy
3
screw
(PTT2.6 × 6)
9
screw
(P2.6 × 10)
7
flexible flat cabl
(CN301)
2
two screws
(PTT2.6 × 6)
MAIN BOARD
4
2
main board
1
two screws
(PTT2.6 × 6)
two ground point screws
6
flexible flat cable (14 core)
(CN701)
4
screw (PTT2.6 × 6)
3
rubber cap (25)
2
ground point screw
1
three screws
(PTT2.6
×
8)
5
insulated
plate
6
chassis
4
HEAT SINK
1
three screws
(PTT2.6
3
heat sink
×
8)
2
two screws
(PTT2.6
1
×
12)
two screws
(PTT2.6
×
8)
5
SECTION 3
w
ASSEMBLY OF MECHANISM DECK
Note: Follow the assembly procedure in the numerical order given.
5
HOUSING
4
Fit claw on B part.
3
Put the housing
under A part.
2
Install the hanger onto
two claws of the housing.
housing
Fit projection on C part.
C
part
7
Holder the hanger by bending the claw.
1
Install the catch to the hanger.
hanger
6
Fit projection on D part.
8
Hold the hanger by
bending the claw.
D
part
ARM (SUCTION)
A
part
projection
B
part
2
Move the arm (suction) in the arro
direction and fit on projection.
1
Fit the arm (suction) on the shaft.
6
LEVER (LDG-A) / (LDG-B)
)
shaft
A
shaft
1
Fit the lever (LDG-A) on
shafts
A
– C and install it.
B
shaft
C
3
type-E stop ring 2.0
shaft
A
Fit the lever (LDG-B) on
2
shafts
install it.
A
and B and
shaft
B
GEAR (LDG-FT)
hole
hole
gear (LDG-D)
lever (LDG-A)
gear (LDG-FB)
4
Align hole in the gear (LDG-D)
with hole the lever (LDG-A).
2
tension spring (LD-2)
5
gear (LDG-FT)
1
6
polyethylene washer
2
tension spring (LD-1)
3
Move the lever (LDG-B
in the arrow direction.
7
GUIDE (C)
s
2
guide (C)
1
three claws
MOUNTING POSITION OF CAPSTAN/REEL MOTOR (M901)
Note: Mount the motor so that the
angle between of the
motor and the hole for the
screw becomes 30
shown in this figure.
°
as
two precision screw
(P2 × 2)
capstan/reel motor
(M901)
30˚
8
Tape Speed Adjustment
– SET UPPER VIEW –
SECTION 4
r
MECHANICAL ADJUSTMENTS
SECTION 5
ELECTRICAL ADJUSTMENTS
1. Clean the follo wing parts with a denatured-alcohol-moistened
swab:
playback head pinch roller
rubber belt capstan
idler
2. Demagnetize the playback head with a head demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. The adjustments should be performed with the power supply
voltage (14.4 V) unless otherwise noted.
• T orque Measurement
Mode Torque Meter Meter Reading
Forward CQ-102C (30 – 65 g•cm)
Forward
Back Tension
Reverse CQ-102RC (30 – 65 g•cm)
Reverse
Back Tension
FF, REW CQ-201B (60 – 200 g•cm)
CQ-102C (0.5 – 4.5g•cm)
CQ-102RC 0.05 – 0.44 mN•m
2.95 – 6.37 mN•m
(0.42 – 0.90 oz•inch)
0.05 – 0.44 mN•m
(0.01 – 0.06 oz•inch)
2.95 – 6.37 mN•m
(0.42 – 0.90 oz•inch)
(0.5 – 4.5g•cm)
(0.01 – 0.06 oz•inch)
5.89 – 19.61 mN•m
(0.83 – 2.78 oz•inch)
TAPE DECK SECTION
0 dB=0.775 V
Tape Speed Adjustment
Setting:
test tape
WS-48A
(3 kHz, 0 dB)
set
AUDIO OUT REAR jack (J331)
10 k
Ω
frequency counte
+
–
Procedure:
1. Put the set into the FWD PB mode.
2. Adjust adjustment resistor for inside capstan motor so that the
reading on the frequency counter becomes in 3,015 Hz.
Specified Value: 2,955 to 3,075 Hz
Adjustment Location:
• T ape Tension Measurement
Forward CQ-403A (more than 90 g)
Reverse CQ-403R (more than 90 g)
Mode Tension Meter Meter Reading
more than 8.83 mN•m
(more than 3.18 oz)
more than 8.83 mN•m
(more than 3.18 oz)
TUNER SECTION
Tuner section adjustments are done automatically in this set.
9
MEMO
10
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